Where is the magnetic field of a current element (i) minimum and (ii) maximum?

When is the magnetic flux through an area element (i) maximum (ii) zero ?

The magnetic field due to a current element is independent of :

A rectangular coil of sides l and b carrying a current I is subjected to a uniform magnetic field vecB acting at an angle theta to its plane. Write the expression for the torque acting on it. In which orientation of the coil in the magnetic field, the torque is (i) minimum and (ii) maximum.

In a solenoid carrying current, where is the magnetic field (i) maximum (ii) minimum and (iii) half of the maximum value?

Where is the magnetic field due to current through circular loop is (i) uniform and (ii) non-uniform?

(A) : A moving charge is a source of magnetic field. (R) : A current element is a source of magnetic field .

(A) : A moving charge is a source of magnetic field. (R) : A current element is a source of magnetic field .